Since this is water soluble, can it be used on pcb's and electronics? will it corrode over time? it's non-acid.

NO....do not use this on electronics or pcb's as it will corrode with that green corrosion. I have tried it and that is what happens. In a water pipe it is fine as it all washes away naturally.

I have a ring that snapped and i want to fix it, i can still wear the ring but the part where it snapped pinches the skin. can i use it on jewelry?

This would likely corrode the ring badly. Its removes oxidized layers so solder can stick to the base metal. It's very acidic and corrosive.

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LA-CO 22194 -Water Soluble, All Weather Copper Flux Paste for Soldering, Brush in Cap, Developed for Plumbing, 4 oz, Made in USA

LA-CO 22194 -Water Soluble, All Weather Copper Flux Paste for Soldering, Brush in Cap, Developed for Plumbing, 4 oz, Made in USA

Product ID: 61297208

💧Water-soluble, no residue

🌡️All-weather, hot & cold use

🛡️Lead-free & non-toxic safety

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Description

🔥 Elevate your plumbing game with flux that flows as smoothly as your career! 💧

SMOOTH SOLDER FLOW - Cleans pipes on contact, enabling seamless solder joints every time.
SAFETY FIRST ALWAYS - Non-acidic, lead-free, and non-toxic—engineered to protect you and your pipes.
BUILT FOR EVERY CLIMATE - All-weather paste performs flawlessly from freezing winters to scorching summers.
CLEAN CLEAR PERFORMANCE - Water-soluble formula leaves zero residue, ensuring pristine plumbing connections.
CERTIFIED QUALITY ASSURANCE - Meets ASTM B813 & NSF-61 standards for potable water, trusted by pros nationwide.

The LA-CO 22194 Copper Flux Paste is a 4 oz water-soluble, lead-free soldering paste designed for plumbing professionals. It meets ASTM B813 and NSF-61 standards, ensuring safe use with potable water. Its all-weather formula works efficiently in both hot and cold environments, cleaning pipes for smooth solder flow without leaving residue or corrosion risks.

Specifications

ASIN	B002DLU96O
Best Sellers Rank	#28,240 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #38 in Soldering Flux
Date First Available	May 25, 2017
Department	All Ages
Is Discontinued By Manufacturer	No
Item Weight	5.3 ounces
Item model number	22194
Manufacturer	La-Co
Product Dimensions	1 x 1 x 1 inches

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